baker



Oct; 19, 1926.,

R. M. BAKER LOADING MACHINE Filed Oct 1925 5 Sheets-Sheet 1 Oct. 19,19260 R. M. BAKER LOADING MACHINE led Oct, 17 I 5 Sheets-Sheet 2 NR MbOct. 19 1926..

R. M. BAKER LOADING MACHINE ile on. 17

5 Sheets-Sheet 5 m n w & M R

R. M. BAKER LOADING MACHINE iled Oct: 17 1925 5 Sheets-Sheet 4 a w l lmWWW Gum new Patented Oct. 19, 1926 UNETED STATES ROY M. BAKER, OFCHISHOLM, MINNESOTA.

LOADING MACHINE.

Application filed October 17, 1925. Serial No. 63,109.

My present invention relates generally to loading machines, and moreparticularly to a loading machine primarily intended for the handling ofbulk materials such as ore, sand, gravel and the like, in mines andunderground passages where space is limited and the head room inadequatefor the use of the ordinary material used upon the surface for a similarpurpose.

The primary object of my present invention is the provision of a machineor apparatus of this character adapted for control and actuation by asingle operator, which will be simple and inexpensive, which will bestrong and durable, and which will be effective and efficient for theintended'purposes.

With the'above general objects in mind my invention proposes a readilyportable machine in which an extensible and retractable boom is pivotedatits inner end adja cent to the base of a turnable mast or upright, theboom in its retracted position being of either the same or less heightthan the mast when raised tovertical position, and being of notsubstantially greater height in this position, including the bucketcarried.

by the outer portion of the boom.

The foregoing and other objects of my invention together with theresulting advantages thereof may be readily-understood by reference tothe accompanying drawings, illustrating the invention and forming a partof this specification, and wherein,

proved apparatus.

Figure 2 is a top plan View thereof.

. 1* igure 33 of Figure 1.

Figure 1 is an enlarged sectional side view of the outer end of the boomand the bucket carried thereby.

Figure 5 is a detail transverse section taken on line 55 of Figure 4.

Figure 6 is a detail top plan view and partial section of the boom. r

Figure 7 is a detail transverse section taken on line 7-7 of Fig. 6.

Figure 8 isa detail. section through the boom controlling mechanismtaken on line 88 of Figure 8.

Figure 9. is a detailsection through-the mast controllingmechanismstaken on line 9+9 of Figure 3.

is a transverse vertical section therethrough taken substantially online.

Figure 10 is a detail sectional side view illustrating a modified formof bucket.

Figure 11 is a top plan view of the same, and

Figure 12 is a transverse section taken on line 1212 of Figure 10.

Referring now to these figures and particularly to Figures 1 to 9inclusive showing the preferred embodiment of my invention, I provide anapparatus including a horizontal frame or platform 15 preferably mountedon flanged wheels 16, so'that the apparatus as a whole may be easily andconveniently transported upon mine tracks 17. As seen especially inFigure 2, the platform 15 is rectangular and has pivotally connectedbraces 18 extending from its corners for connection by spikes 19 or thelike to the track ties 20, as it is obvious that the apparatus as awhole must in use be effective- 1y braced against lateral andlongitudinal tilting.

Rising from the platform 15 and securely anchored thereto in the mannerbest shown in Figure 3 is a solid post 21, and around this post thelower portionof a cylindrical upright mast 22 is journaled. The mast 22has a lower gear wheel 23, and below said gear wheel 23 it rests upon ananti-friction bearing 2%, facilitating its rotative adjustment on thebearing post 21.

, Engaging the gear 28'is a second smaller gear 25 secured upon thelower portion of a vertical shaft 26, whose lower end is stepped Figure1 is a side elevation of my 1mina'bearing 27 on the platform 15. The tipper end of shaft 26 extends into a gear box 28 mounted in elevatedposition upon upright-supporting beams 29, wherein the shaft has fixedthereto a bevel gear 30. Within the gear boX 28 is a small motor 31,whose shaft is connected by gears 32 to a clutch shaft 33, the latterhaving thereon two spaced apart and oppositely facing bevel gears 3i and35 engaging gear at diametrically opposite points. These gears 34 and 35have clutch faces 36 opposite one another for en gagement by thesimilarly faced opposite ends 37 of a clutch member 38 splined on theshaft and adapted to be shifted by a lever 39, whose handle end 40projects e2;- teriorly of the body. In this way the rotation of the mast22 and the direction of such rotation may be easily controlled by theoperator on the platform 15.

Secured thereto immediately above the gear wheel 23, the mast22hasanoutstanding bracket 42, and "this brack'et'has opposingupstanding ears 43. Through these ears 43 a pivot bolt 44 extends, andalso projects through the side members 'oitthe inner end' or head 45 ofthe boom, or rather the body of the boom. The boom consists of twopertions, an inner or body po'rtion'comprising the inner head 45, anouter head 46 and a series of tubi'ilar' guide members 47 -betwe'enthese heads, andan "outer portion or extension' having ahead 48 anda's'eries ot'guide rods 49, which are slidable in the guide members 47'through'the he'a-d' ifi. The body of the boom has-moreover a cylinder5O to the oppo'siteend's ofwhich air or fluid pressure pipes 51 and 52are'connectedin practice. The cylinden has therein a piston whoserod-53% connected 'to' the head 48 Of 'thefb'dom extension whereby thelatter "by suitable controlof the sup ly of airor fluid through ipes 51and 52 may hemmed outwardly 'to the retracted position.

The upper end of'the' ma'st aa is slotted and has mounted therein aguide pulley 54, over which the boom controlling cable 553s extended.The outer end of this cable is 'securely'attached to the outer head 46of the body of the boom 'by a member 55, while the inner end is extendedaround 'a'windi'n drum 56 in a casing 57 attached to thema'st as plainlyseen in'Figur'e 3. The drum 56 is controlled by a"bra ke"'58' actuatedbya brake lever 59, and the drum'ismounted on the'shaft {60 of amotor61, also within the casinghl' 'as'see'nhy acoinparisonb'f Figtires 2 andI As seen in Fi'gures h t-and 5 'in articular, a clam 's'hell'buelret'is employedydns bucket having relatively'movable "sections 62 "pivotedon across bar 63, which isrigi-dly connected to" th lower "ends of spaed curved supporting "arms 64. This sh'aft'h'as secured to its''centrall portionhn upright U- shaped frame 65, between the upper 'endso-f which a cylinder 66'is" fixed.

To the bucket 'se'ctio'n's"the lower outer ends of pair of connectinglinks 67are pivoted'at 68. I The upper inner ends of these links aremovably connected to theends of a cross-shaft 69 parallel with andabove'the bar 63. Cent-rally between the ends "the shaft 69 is connectedto the lower end of a' piston rod'70, whose u'pper end is connected I toa piston 71 in the cylinder 66. To the pwi eends "of thetylinderair"-orfiuid pipes 72 and 73 are connected, and it"is'ob 'v'ious" thatwhen the piston '71- is fcrc 'ed downwardly the bucket-sections 62 willbe closed asindicated in "dotted lines in Fig. 4,"

and that when the piston'i's'fo'rced upwardly the "buckets'ections-willunove 'to" the o-pen position shown in tull lin'es'in saidfigure.

Insteadef'the clans shell bucket just above descnbed, I may employ ascoop bucket 74 of rectangular form as shown in the modification,Figures 10,, 11 and 12. This bucket will have a filling lip 7 5 at oneside of its open end, and will have at its opposite end a pivotedclumpin'g"door 76 hinged at 77 and normally latched by a spring latchmem her 7 8 slidable on the door and engageable with akeeper-79depending from one of the. bucket walls. To this latch member a flexible'c'onnection '80 :is connected through a lever 81, and by pulling-thisconnection; the latch member may be withdrawn and the door permitted todrop, with the parts in the dotted line posit-ion of Figure 10.

-The bucket 74 is supported as a whole in supporting arms '82 extendingfrom-the extension head 48* ofthe boom, and to these arms 82 the bucketis pivotally connected at its sideswas at '88; so it mayswingirom ahorizontal leading position asfshown in full lines-Lin "Figure 10 to avertically dumping position-shown in dotted lines. --'In utilizing thisscoop bucket the outer head l-6 of: the boom has an angular lug84*positioned for engagement-by a hook 85 carried by the bucket, whenthe boom is in Verticalpositi'on and the boom extension 'is' retracted.Thus" when the boom is lowered the bucket will be held from'swinging toa vertical posi- "ti-'o'n andthus-"suplported for proper loweringmovement to the aground, until the extended :hoom isshifted outwardly to'load'the bucket. i In'the operation of the apparatus with the bucketof' lligures 10,11and12, the :operator' -firstfll-owers the boom withthe parts in'the full-line-rposition -of Figure 10 and then shifts the"boom extension outwardly -rso a's to force the "open K end ofthe=bucketinto the material to'be loaded. The looomis-then raise'ds'li'ghtly and the extension is retracted after-which the boom :is"elevated to nearly a. verticabposition, the *mast'turned to swing thebo'omaround'to therear of the apparatus and"then" the'boom lowered andthe e'xtension shifted outwardly to'the car or other point where'them-aterial is to bQ-dUHI'PBd. The" conhection"- 8( "is 'then pulledand the (1001"76 r'eleasedso that thei load drops The boom is thenraised and the extension retract-ed and hook85 engages lug '84, as inFigure "10. The mast is'then 'again turned so that the boom swings to 'attorward positionand' the boomjis then lowered. During the last loweringof the 'booin preparatoryito a'noth'er l'oading operation, the door 7 6will swing by gravity to closed-and latched position.

In the use of the apparatus as shown in Figures 1 to' 9 'incl'usi ve,the =b'0omis'raised and the boom extension "shifted r outwardly, and thebucket sections 62-actuated -to the epeni position before' the boomis-lowered so that the'open bucket is -on-"t-he= load. The bucketsections are then iclosedfonthe load andthe boom may then be raisedduring which the boom extension is retracted. The mast is then rotatedthrough 180 degrees and the boom lowered and its extension shiftedoutwardly. The bucket is then opened, permitting the load to dump afterwhich the boom is raised, the extension retracted and the mast rotatedso that the parts return to the loading position.

It is obvious from the foregoing that my invention presents aconstruction and arrangement of parts which readily carries out theobjects first above stated and which promotes strength and durability inaddition to effectiveness and efficiency in operation.

I claim:

The combination in a loading machine of a wheeled frame, a mastrotatable thereon and a boom pivoted at the base of said mast, said boomcomprising a pair of tubular guides and rigid heads connecting theguides, an extensible frame comprising a head and reciprocable rods insaid guides, a cylinder supported between said guides, a rod on the headof the extensible frame and a piston for said rod in the cylinder, meansfor introducing motive fluid at opposite sides of said piston, and aloading bucket carried by the extensible frame.

In testimony whereof I have aifixed my signature.

ROY M. BAKER.

